How to Retrieve .UNKNOWN Files from Cloud Storage After Mistaken Deletion

There are several common reasons for encountering problems when trying to open a file with the .UNKNOWN extension:

1. File corruption: The file may have been corrupted during download, transfer, or storage, leading to issues when trying to open it.
2. Incorrect file extension: The file might have been saved with an incorrect or missing file extension. In such cases, the .UNKNOWN extension is added automatically by the operating system when it fails to recognize the file type.
3. Incompatible software: The file may be associated with a specific software program that is not installed on the system. Without the required software, the file cannot be opened.
4. Outdated software: The software needed to open the file may be outdated or not compatible with the file format. In such cases, updating the software or finding an alternative program that supports the file type might be necessary.
5. Unknown file format: The file might be in an uncommon or proprietary file format that is not widely supported. In such cases, finding a specialized software or converter that can handle the file format becomes necessary.
6. File type mismatch: The file extension may not accurately represent the file type. It could be a result of a typo or an incorrect association made by the operating system.
7. File encryption or password protection: The file may be encrypted or password-protected, requiring the correct password or decryption method to access its contents.
8. File system error: The file system itself may have errors or inconsistencies that prevent the file from being opened. Running a disk check or repairing the file system might be necessary.
9. Malware or virus infection: If the file is infected with malware or a virus, it may cause issues when trying to open it. Antivirus software should be used to scan and remove any potential threats.
10. File is incomplete or missing components: Some files require multiple components or dependencies to be present in order to open correctly. If any of these components are missing or incomplete, it can result in problems when opening the file.

There are several troubleshooting steps and software solutions you can try to fix issues with opening .UNKNOWN files:

1. Change the file extension: If the file extension is .UNKNOWN, it means that the file type is not recognized by your operating system. Try changing the file extension to a known file type that you think the file might be. For example, if the file contains an image, you can try changing the extension to .jpg or .png.
2. Identify the file type: Use a file identification tool or online service to determine the file type. There are various websites and software available that can analyze the file and provide information about its format. Once you know the file type, you can search for software that can open that specific file.
3. Use a universal file viewer: Universal file viewers like File Viewer Plus or Free File Viewer can open a wide range of file types, including unknown ones. These programs have built-in support for many file formats and can often open files that other applications cannot.
4. Install the necessary software: If the file is associated with a specific program, make sure that program is installed on your computer. For example, if the file is a .docx file, you need Microsoft Word or a compatible word processing program to open it.
5. Update or reinstall relevant software: If you already have the necessary software installed but still can't open the file, try updating it to the latest version. If that doesn't work, consider reinstalling the software to ensure all components are properly installed.
6. Use a file conversion tool: If you know the file type but don't have the appropriate software to open it, you can try converting the file to a more common format using a file conversion tool. This will allow you to open the file with a program you already have.
7. Consult online forums or communities: If none of the above solutions work, you can search online forums or communities dedicated to file formats and troubleshooting. There might be experts or users who have encountered similar issues and can provide guidance or specific solutions.

Remember to exercise caution when opening files from unknown sources, as they may contain malware or be potentially harmful. Always use antivirus software and ensure your system is up to date.

To identify the correct file type and extension for a file that is currently showing as .UNKNOWN, you can follow these steps:

1. Check the file properties: Right-click on the file and select "Properties" (on Windows) or press "Command + I" (on Mac). Look for any information about the file type or extension in the properties window.
2. Examine the file name: Sometimes the file name itself can provide clues about the file type. For example, if the file contains the word "document" or "image" in the name, it might give you an idea about the file type.
3. Use a file identifier tool: There are online tools and software available that can help identify the file type based on its content. These tools analyze the file's binary data and provide information about the file format. You can search for "file identifier" or "file type identifier" on your preferred search engine to find suitable tools.
4. Consult the source: If you received the file from someone else or downloaded it from a website, try to find any accompanying information or documentation that might indicate the file type.

Once you have identified the correct file type and extension, you can open it without any problems by using an appropriate software application associated with that file type. For example, if the file is a .docx document, you can open it with Microsoft Word or other compatible word processing software.